Guess who this is? I'll post more picture when people have guessed right. Absolutely horrible, she's so stunning and looks better as a brunette.

Looks like Jennifer Aniston. Eh

It's not Jennifer Aniston. I'll give you a hint she's the star in "Underworld"

Kate Beckensale (sp)?

Kate Beckinsale?

CORRECT! Kate Beckinsale the beautiful brunette actress turned blonde! She looks so basic now and a Sienna Miller clone.

Brunettes >>>> Blondes.

she looked better before

Am I the only one that thinks Kate as a blonde now looks like Sienna Miller's doppelganger?

Jennifer Aniston? I caught Kate Beckinsale from the get-go.

I didn't know she had donned blonde before.

Ahhh..my lovely internet had only loaded the 1st pic. lol

Shows my lack of concern for celebs nowadays..

Perhaps she's doing it for a role... I mean, she is an actress after all.... and we just saw another drastic transformation the other day by Rooney Mara for The Girl With the Dragon Tattoo.

She went from fierce scarlet to basic bitch within a day.

i liked the brunette look much better

The brunette look >>>>>>>>>>>

She reminds me of Lindsay in those pics.

Maybe she's playing as Lindsay Lohan's Biopic...

I thought that was Isla Fischer.

I'm sending her a box of Clairol in Dark Brown immediately.